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Finding the Fourth Proportional to 470,491.20, 705,736.80 and 115,500.60

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Solution

The fourth proportional to 470,491.20, 705,736.80 and 115,500.60 is: 173,250.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,491.20 : 705,736.80 = 115,500.60 : x
  2. Step 2: Convert to fraction form
    470,491.20/705,736.80 = 115,500.60/x
  3. Step 3: Cross multiply
    470,491.20x = 705,736.80 × 115,500.60
  4. Step 4: Simplify right side
    470,491.20x = 81,513,023,842.08
  5. Step 5: Solve for x
    x = 81,513,023,842.08/470,491.20
  6. Step 6: Final answer
    x = 173,250.90

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.